Special Steel

Martensitic Steels
High Strength Special Steel
Austennitic Steels
Percipitation Hardening Steels
These special steels have improved mechanical properties and better workability which are essential for special applications in aerospace, power generation, nuclear, defence, cryogenic and other general engineering industries. These include precipitation hardening steels, non-magnetic austenitic and martensitic stainless steels.

Grade No.

Uns. No.

Conformity To International Specification

Known Equivalent

Max Service Temperature

MDN 174

S 17400

ASTM A 564-TYPE 630

Alloy 17-4 PH

315° C

MDN 904

N 08094

ASTM B 625,B 649

AVESTA 904L

--

MDN 15-5PH

S 15500

ASTM A 567

Alloy 15-5 PH

350° C

MDN 11-10PH

-

-

Alloy 11-10 PH

400° C

GRADE PRINCIPAL CHARACTERISTICS APPLICATIONS

MDN 174

A precipitation hardening steel offering good corrosion resistance with high strength and hardness
Used in application demanding high corrosion resistance upto 300° C